As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATES ON RECALL. PRIMARY CONTROLLER INOP. GROUNDED - YES. LH PACK TEMPERATURE CONTROL BITE TEST CALLS OUT LH TEMPERATURE CONTROL VALVE. REMOVED AND REPLACED LH TEMPERATURE CONTROL VALVE IAW B737-900 AMM 21-51-10-000-801 AND AMM 21-51-10-400-801. ETOPS GROUND VERIFICATION TEST GOOD IAW AMM 21-61-00-700-806-002.